Image: NASA/JPL-CaltechAn artist’s rendering of a windbot floating through the turbulent skies of Jupiter. The concept in the image is portrayed as a polyhedron with sections that spin to absorb wind energy and create lift, but NASA researchers will explore other designs.

Sending a robotic lander to Jupiter is probably not a good idea. There’s a rocky core down there somewhere, encased by metallic hydrogen and covered by an ocean of supercritical hydrogen, so technically, there is...